VALDEZ, Alaska (AP) – Authorities in Alaska have released the identities of three people found dead in the icy waters of a glacier-fed lake.

The City of Valdez says among the dead were a German couple, Dr. Albercht Paul Thomas Schroder-Schroer and Maria Elisabeth Schroer, and a recreational guide, Austrian Manfred Brida.

The three were found Tuesday in the water near the toe of the Valdez Glacier, about 100 miles (161 kilometers) east of Anchorage. One body has significant head trauma.

City spokeswoman Sheri Pierce says the glacier is calving, or shedding ice. She says if the glacier released, it could cause significant trauma.

The bodies have been transported to the state medical examiner’s office to determine the cause of death. Foul play isn’t suspected.